First, let’s explore what I mean by “necessary,” as some entrepreneurs used to doing business in person or over the phone may already be combating my points.

People use the Internet whether you do or not. That means potential customers may be searching for you (and able to find nothing). It means current customers could think negatively of you after comparing you to an online competitor. Ultimately, the necessities will cover the following basic tenets of digital availability:

Ensuring your brand is foundwhen people search for it. Think of this as making sure you’re listed in the phone book—otherwise, people won’t know how to reach you.

Displaying your modernity. Like it or not, being uninvolved in the digital realm will harm your reputation; it will make you seem behind the times and unwilling to change (even in a traditional industry, this is a bad thing).

Picking up outside opportunities. Not everyone prefers meeting in person or talking over the phone—in some cases, it may not even be possible. Your digital presence will give an alternative contact method for these situations, preventing you from losing opportunities.

With that out of the way, let’s tour the real basics.

Basic One: A Website

A website should be your first priority. Don’t make this more complicated than it needs to be; yes, a pleasingly designed site will do you more good than a shoddy one, but you don’t need a million-dollar marketing agency or advanced coding skills to build one. There are dozens of businesses dedicated to helping other businesses build sites free (or cheap), quickly, and easily.

A website will touch on all three “necessary” points as I listed them above—it will serve as an entry for your business (like a phone book), show that you’re willing to adapt to the new times, and give an alternative contact method (an online contact form) to those who can’t visit you or find you in person. I won’t get into the specifics of building a website here, but if you choose a template site, the steps are very approachable, even for newcomers.

Basic Two: Social Media

You don’t need to download dozens of new apps, and you don’t need to post all the time. You do need to claim your business’s social profiles, however, and fill out your profiles completely—at least on the major players (Facebook, Twitter, LinkedIn, Instagram, and Youtube). Think of these as billboards for your company, telling people a little about yourself when they find you and providing a reliable means of contact.

Plus, filling out your information completely and accurately will help ensure the accuracy of your business listing in third party directories (which in turn can help your search rankings, but I won’t get into that here).

It’s completely free to do—in fact, it will probably take you a few hours or less to get your brand set up on all relevant platforms.

Basic Three: Content

Finally, you need a contextual anchor for your business online—otherwise, your website will be just an empty shell. Well-written content (preferably ongoing via a blog, as part of a robust content strategy, but at a minimum on the core pages of your site) will serve several functions. It will tell users more about your brand, do some selling on your behalf, and help your site get indexed and ranked for relevant terms in Google searches.

The more detailed you can be here, the better—and if you’re going for the bare minimum, you only have to do it once.

What’s Next?

That’s all up to you. The three basics covered above will serve most of your “essential” needs—making sure you don’t miss out on any potential opportunities without requiring a huge investment. Beyond that, it all comes down to how much you’re willing to spend, and what your goals are.

For example, if you’re interested in getting more visibility and authority for your brand, you can:

Step up your content marketing strategy.

Post on social media and start building an audience relevant to your demographics.

Create an FAQ, forum, or other interactive resource for existing customers.

Develop a mobile app.

These are just some ideas to get you started—the digital world is ripe with opportunities for business development, and there are strategies available for any niche and any budget. Focus on establishing your “basic” foundation first; you’ll cover all your essential needs for a minimal investment, and you’ll leave plenty of room for potential expansion later.